Date: Tue, 28 Nov 2006 14:38:57 -0800 From: Garrett Cooper <youshi10@u.washington.edu> To: freebsd-hackers@FreeBSD.ORG Subject: Re: Single UDP sockets : duplex capable? Message-ID: <456CBA81.5040302@u.washington.edu> In-Reply-To: <9ab217670611281324y7e6b9d69g7f8843504b2fbd8d@mail.gmail.com> References: <456CA68E.7090207@u.washington.edu> <9ab217670611281324y7e6b9d69g7f8843504b2fbd8d@mail.gmail.com>
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Devon H. O'Dell wrote:
> 2006/11/28, Garrett Cooper <youshi10@u.washington.edu>:
>> Hello,
>>
>> Just wondering, abstractly..
>
> Both sides can read from and write to the socket file descriptor.
> You'll need to develop a protocol to determine when either given side
> is expecting to receive or to send data (if both sides sit around in
> read(2), you're not going to get much done) :)
>
> --dho
>
>> -------------------------
>> | A -[socket (UDP)]-> B |
>> -------------------------
>>
>> A creates a UDP socket (call it 's1') to talk to B.
>>
>> Can B use the same socket ('s2') to talk to A using read(2) or
>> recv(2), or does A have to accept(2) traffic from B using a different
>> socket?
>>
>> The programming language I'm using is C (not C++).
>>
>> Thanks,
>> -Garrett
Ok. While my intuition of networking hinted that, I didn't want to make
an assumption and bite myself in the ass, so as to speak.
Thank you very much again for the clarification!
-Garrett
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